The measure of inertia of an object is its mass.
Inertia of an object
- According to Newtonian mechanics, Mass is a quantitative measure of a body’s inertia.
- Inertia is defined as a property of matter by which it remains at the state of rest or in uniform motion in the same straight line unless acted upon by some external force.
- The law of inertia, also known as Newton’s first law of motion states that an object will continue to be in the state of rest or in a state of motion unless an external force acts on it.